Holley Fuel Pump: Inline Billet Fuel Pump

We were recently treated to a sneak peak at a new line of Holley fuel pump. You're looking at the standard-output Holley fuel pump (PN 12-700) in the main image. Don't take that to mean wimpy output (see the spec chart below for specific flow numbers). In short, the HP pump will support 900 carbureted horsepower, while the twin-pump Dominator is good to 1,050 hp.

The key is the gerotor design, which helps to move large amounts of fuel more efficiently than traditional vane-style pumps. The new Holley fuel pump offers reliable fuel flow, quiet operation, and long lives. Holley rates them as good for more than 100,000 miles.

Holley Fuel Pump Specs

Description

Flow

Max HP NA/Forced Induction

Max Amp Draw

HP

15 gph at 8psi

900/690

13

47 gph at 60psi

550/430

Dominator

96 gph at 8psi

1,050/800

18

70 gph at 60psi

800/600

Gee-what?

Gerotor pumps are not new, and you've got one pumping the oil in your car’s engine if you have LS, new Hemi, or modular power. The word gerotor is a contraction of the words “generated” and "rotor." They are positive displacement pumps consisting of just two moving parts: an inner and outer rotor. The inner rotor has one fewer tooth than the outer rotor and is mounted off center within the outer rotor. As the rotors turn, fluid is drawn into the low-pressure area of the inlet side and is forced out the outlet port as the volume decreases on the other side. Compared with vane-style pumps, gerotors run more quietly and operate virtually wear free.

The Dominator is a twin-pump design for even more flow and pressure. The pumps can run simultaneously or separately as needed based on load and fuel demand.